#include #define all(vec) vec.begin(),vec.end() using namespace std; typedef long long int ll; typedef pair P; const ll MOD=1000000007; const ll INF=1000000010; const ll LINF=4000000000000000010LL; const int MAX=310; const double EPS=1e-9; int dx[4]={0,1,0,-1}; int dy[4]={1,0,-1,0}; int main(){ int n;cin>>n; for(int i=1;i<=n;i++){ for(int j=i;j<=n;j++){ if(n-i-j